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Title: Performance response of packed-bed thermal storage to cycle duration perturbations

Abstract

Packed-bed thermal stores are integral components in numerous bulk electricity storage systems and may also be integrated into renewable generation and process heat systems. In such applications, the store may undergo charging and discharging periods of irregular durations. Previous work has typically concentrated on the initial charging cycles, or on steady-state cyclic operation. Understanding the impact of unpredictable charging periods on the storage behavior is necessary to improve design and operation. Here in this paper, the influence of the cycle duration (or 'partial-charge' cycles) on the performance of such thermal stores is investigated. The response to perturbations is explained and provides a framework for understanding the response to realistic load cycles.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Imperial College, London (United Kingdom). Clean Energy Processes (CEP) Lab., Dept. of Chemical Engineering
  3. Univ. of Cambridge (United Kingdom). Engineering Dept.
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
Engineering and Physical Sciences Research Council (EPSRC); USDOE
OSTI Identifier:
1475117
Report Number(s):
NREL/JA-5500-71189
Journal ID: ISSN 2352-152X
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Energy Storage
Additional Journal Information:
Journal Volume: 19; Journal Issue: C; Journal ID: ISSN 2352-152X
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 47 OTHER INSTRUMENTATION; 25 ENERGY STORAGE; thermal energy storage; thermocline; packed bed; exergy analysis; heat transfer; partial charge

Citation Formats

McTigue, Joshua D., Markides, Christos N., and White, Alexander J. Performance response of packed-bed thermal storage to cycle duration perturbations. United States: N. p., 2018. Web. doi:10.1016/j.est.2018.08.016.
McTigue, Joshua D., Markides, Christos N., & White, Alexander J. Performance response of packed-bed thermal storage to cycle duration perturbations. United States. doi:10.1016/j.est.2018.08.016.
McTigue, Joshua D., Markides, Christos N., and White, Alexander J. Mon . "Performance response of packed-bed thermal storage to cycle duration perturbations". United States. doi:10.1016/j.est.2018.08.016. https://www.osti.gov/servlets/purl/1475117.
@article{osti_1475117,
title = {Performance response of packed-bed thermal storage to cycle duration perturbations},
author = {McTigue, Joshua D. and Markides, Christos N. and White, Alexander J.},
abstractNote = {Packed-bed thermal stores are integral components in numerous bulk electricity storage systems and may also be integrated into renewable generation and process heat systems. In such applications, the store may undergo charging and discharging periods of irregular durations. Previous work has typically concentrated on the initial charging cycles, or on steady-state cyclic operation. Understanding the impact of unpredictable charging periods on the storage behavior is necessary to improve design and operation. Here in this paper, the influence of the cycle duration (or 'partial-charge' cycles) on the performance of such thermal stores is investigated. The response to perturbations is explained and provides a framework for understanding the response to realistic load cycles.},
doi = {10.1016/j.est.2018.08.016},
journal = {Journal of Energy Storage},
number = C,
volume = 19,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
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